Disassembly and assembly of a bottom bracket (Shimano BB-UN26) - YouTube
What is the difference between this Shimano BB-UN50 and the BB-UN55 ? The former is hard to find for sale, the latter seems to be found everywhere : r/bikewrench
Shimano UN55 Square Taper Bottom Bracket 68mm x 113mm - THE BICYCLE STATION
BB-UN55 Bottom Bracket British Thread 73-113MM - Duff Cycles
Hey, I'm looking for a replacment for this bottom bracket, its a VP BC-73 BC 1.37X24T 122.5m, I found two shimanos the BB-UN26 and UN 55, but I noticed on the UN55,